Calibrated 12 x 10 mm Oval Shape Natural Loose Gemstones: GemSelect

Some people by gems by color or price, but for many, it is best to buy gems by shape and size - especially if you're in need of a gem to replace a previous item that was lost or damaged. Calibrated oval shapes, facet cut and cabochon gems available now in 12 x 10 mm size range. Shop a wide range of calibrated gemstones by size online at wholesale from GemSelect.

As a general guideline, when it comes to 'calibrated' gems, they are not usually expected to be cut to exact measurements. For calibrated gemstones weighing under one carat, most jewelry settings will accommodate a gem which is within 0.2 mm of the calibrated size in order to fit a standard setting. For gemstones that weigh over one carat, a larger variance is acceptable, often round shape settings will allow 0.3 mm or slightly higher even. This small variance can usually be accommodated for most standard style settings. Round-cut gemstones should also have a greater variance in acceptable size when it comes to calibration; in fact it is usually possible to mount a round stone of any size in the closest standard setting.

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Gemstone Information

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Overall Rating -> 10

Best place to buy gem stones, dont bother shopping else where. Prices are great, no issues with shipping and customer service is the best.

Posted By J in December, 2023

Source: Bizrate

Overall Rating -> 10

the searching format was easy to find what i needed. It helped to be able to sort Lowest price to Highest because i wasnt looking to spend too much but i did want an actual stone and not imitation.

Posted By PixelComposer in January, 2024

Source: Bizrate

Overall Rating -> 10

I really enjoy browsing through GemSelect. The selection is always marvelous and I love how detailed everything is described. The only thing I noticed is that when browsing through my phone, the videos of the gems do not load. If there were more videos of the gems, that would be amazing, though I understand that is a lot of work on GemSelect's part! Checking out is also very fast and easy, and I love that the return policy is very good, though I hope I don't have to use it anytime soon.

Posted By ChiChi in January, 2024

Source: Bizrate

Overall Rating -> 10

LOVE YOU GUYS. YOU CARRY EVERY GEMSTON I WANT. THE PRICE IS GREAT,THE PRODUCT IS OUTSTANDING,AND THE SERVICE CANT BE BEET.

Posted By APPS in April, 2024

Source: Bizrate

Overall Rating -> 10

Overall, the whole process was just great.

Posted By Thatoneguy in August, 2023

Source: Bizrate

Overall Rating -> 10

My only complaint is that there are so many beautiful and affordable stones that I get distracted from what I planned to order.

Posted By Phoenix in March, 2024

Source: Bizrate

Overall Rating -> 10

Everything was fine.

Posted By Matt in March, 2024

Source: Bizrate

Overall Rating -> 10

I love the clear description of the certification options. It's very rare to see a gem site that offers a deep explanation of each institution that would certify the stone(s).

Posted By Oakcityceo in May, 2023

Source: Bizrate

Overall Rating -> 10

Easy to navigate

Posted By G Funk in December, 2023

Source: Bizrate

Overall Rating -> 10

great. thank you

Posted By Carrotroller in July, 2023

Source: Bizrate

Overall Rating -> 9

So many gorgeous stones! The only "complaint" I have is it's difficult to visualize sizes in mm. Perhaps some way to compare in inches?It has been a long time since I bought stones from Gem select, but the process wasn't too difficult.

Posted By Ktreva52 in February, 2024

Source: Bizrate

Overall Rating -> 9

Not easy enough to buy by exact size, and many stones aren't carbechon curved shape on top

Posted By Erick in July, 2023

Source: Bizrate

Overall Rating -> 10

Easy to use.

Posted By Hope in March, 2024

Source: Bizrate

Overall Rating -> 9

It went well

Posted By Rob in December, 2023

Source: Bizrate

Overall Rating -> 9

Well presented images, clear information, quick and easy check out.

Posted By Mr. Bezel in July, 2023

Source: Bizrate

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Gemstones A-Z

Buy Oval Shape 12x10 mm Gems

6.14 carat Swiss Blue Topaz, Emerald-Cut loose Topaz from Cambodia, Natural Gems, 8.2 x 8.1 mm

7.25 carat Pear Shape Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 15.5 x 11.9 mm

32.76 carat Pear Jasper, loose Certified Jasper from Indonesia, Natural Untreated Gem, 36.3 x 20.5 mm

5.19 ct Asscher Cut Rose Quartz, 10.5 x 10.5 mm From South Africa

4.44 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 13.4 x 10 mm

2.14 ct Orange Sunstone, 8.8 mm Round Cut From India

1.51 carat Oval Demantoid Garnet, loose Certified Demantoid Garnet from Namibia, Natural Untreated Gems, 4.8 x 3.9 mm

1.43 carat Orange Zircon, Emerald Cut loose Zircon from Tanzania, Natural Untreated Gem, 7.1 x 5.2 mm

1.24 carat Round Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 7.1 mm

29.86 ct Pencil Cut Jasper, 32.3 mm From India

1.72 ct Pink Morganite, 8.8 x 6.8 mm Oval Cut From Afghanistan

1.18 carat Oval Ruby, loose Certified Ruby from Madagascar, Natural Gem, 6.8 x 5 mm

0.65 ct Loose Orange Sapphire, 6.1 x 4.1 mm Oval Cut From Tanzania

33.07 ct Green Jadeite, 42.5 x 14.2 mm Carved From Myanmar

3.49 carat White Zircon, Diamond-Cut loose Zircon from Colombia, Natural Gems, 7 mm

1.7 carat Orange Hessonite Garnet, Square loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 6.6 x 6.6 mm

13.14 ct Loose Pear Dendritic Agate, 16 x 12.2 mm From India

1.46 carat Orange Zircon, Diamond-Cut loose Zircon from Cambodia, Natural Untreated Gem, 6.4 mm

5.28 ct Oval Larimar, 14 x 10.1 mm From the Dominican Republic

0.56 ct Loose Yellow Sapphire, 4.3 x 4.3 mm Cushion Cut From Tanzania

10.74 ct Round Rutile Quartz, 11.1 mm From India

2.16 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 7 x 5 mm

19.98 ct Oval Rose Quartz, 18.1 x 13.2 mm From South Africa

6.25 ct Oval Tiger's Eye, 10.9 x 8.9 mm From Thailand

3.3 carat Sky Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gems, 7 x 5.1 mm

4.92 ct Orange Sunstone, 9.9 x 7.8 mm Oval Cut From India

15.28 ct Oval Cut Strawberry Quartz, 19.2 x 13.9 mm From Russia

1.48 carat Pear Shape Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 10.1 x 6.9 mm

4.19 ct Oval Fire Agate, 12.6 x 8.7 mm From Mexico

2.28 ct Yellow Beryl, 10 x 7.8 mm Oval Cut From Madagascar

0.97 carat London Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gem, 7.3 x 5.2 mm

4.29 ct Blue Star Sapphire, 10.1 x 8 mm Oval Cut From Thailand

Gemstone Information

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